Received: 15 August 2020
Accepted: 18 November 2020
First Online: 25 November 2020
Ethics approval and consent to participate
: This study was reviewed and approved by the Ethics Committee of Niigata University.
: Written informed consent was obtained from the patient for publication of this case report and accompanying images. A copy of the written consent is available for review.
: The authors declare that they have no competing interests.